There are a few nouns with rashii that you can remember as a word in itself. This meaning is slighly different from the above verb construction. Instead of meaning info heard elsewhere, when added to a noun it means the speaker thinks something looks like something. Here are a few:

男らしい otokorashii - manly (like a man)
女らしい onnarashii - girly (but perhaps 女っぽい onnappoi is used more)
犬らしい inurashii - like a dog (substitute any animal here. This is useful when you see an animal at night and are not sure what it is, but it looks like..)
アメリカらしい amerikarashii - American-ish (substitute any country)

Another similar construction with nouns is ~ppoi - as seen above with onnappoi. When added to nouns to mean 'looks like...' ~ppoi is the same as ~rashii

Must do なければなりません

This is a mouthful! But it is so useful. Learn it well

TO MAKE IT: plain negative form - i + ければ なりません kereba narimasen

ピーマンを食べなければなりません。 [Would be 食べない for the plain negative form ]
pi-man o tabenakereba narimasen.
(I) must eat green peppers. (Many Japanese children don't like green peppers)

If you want to use ne as a question tag, it helps to nod your head, or change the inflection to let the listener know you would like a response. It is usually used when the speaker feels fairly certain his listeners agree with what was said.

A very useful phrase for whenever something good happens is:

いいね。 ii ne. Isn't that great!

When, that time とき

If you don't know when to say something, you will never say it!

Using とき toki - at the time when...

With a noun add a の

[Looking at a photo] 私は学生のときにはとても若かったね。
watashi wa gakusei no toki ni wa totemo wakakatta ne.
[looking at a photo] When I was a student, I was very young, wasn't I?